<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<form th:action="@{/pay/alipay}" method="post">
  金额：<input type="text" id="dona_money" name="dona_money">
  订单号：<input type="text" id="dona_id" name="dona_id">
  <button type="submit">提交</button>
</form>
</body>
</html>